Floods class action: farmer says 'most intense' he has seen

A LOCKYER Valley farmer who lost crops and equipment in the 2011 flood crisis has recalled the devastating ordeal, telling a court he remembers wading "knee deep" through his flooded home.

The NSW Supreme Court is in the second month of a class action - against the Queensland Bulk Water Authority trading as Seqwater - on behalf of more than 6000 people affected by the January 2011 floods.

At the heart of their claim is that operators of Wivenhoe and Somerset dams failed to follow their manuals in the emergency and didn't take enough account of rain forecasts at the time, which caused unnecessary flooding downstream.

The trial is hearing testimony from several land owners whose properties were impacted by the swollen Brisbane River and Lockyer Creek at the time.